JP2008116133A - Draining device for fuel tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a draining device for fuel tank, by which everybody can easily and safely discharge water collected in a fuel tank. <P>SOLUTION: This draining device for fuel tank comprises a water absorbing core member mounted on a casing body storing a water absorbing agent and a desiccant. The core member is disposed so that the upper end side is located within the water absorbing agent or desiccant of the casing body, and the lower end side is located in the vicinity of the inner bottom of the fuel tank. Further, the core member is mounted on the lower end side of the casing body through a screwing fixing member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a water draining device in a fuel tank used for draining water accumulated in a fuel tank for fuel supply such as an oil fan heater.

  In a fuel tank for refueling such as kerosene used for an oil fan heater or the like, a small amount of water may accumulate in the fuel tank due to a temperature change or the like.

  Also, when kerosene or the like is put into the fuel tank, when a small amount of water present in the storage kerosene tank is put into the fuel tank together with kerosene, the water is accumulated in the fuel tank. Occurs.

  At this time, since water has a higher specific gravity than kerosene, it tends to accumulate near the bottom of the fuel tank.

  And when such water was sent with kerosene to combustion parts, such as a burner, complete combustion was prevented and it became a cause of failure in a combustion part.

Therefore, conventionally, as disclosed in Patent Document 1, water detection means for detecting the presence or absence of water in the fuel tank for refueling is provided on the inner bottom surface of the fuel tank so that the fuel tank is always provided at the start of operation. There is provided a liquid fuel combustion apparatus that determines whether or not there is water in the interior and controls so that the combustion operation cannot be performed until the water is removed.
JP 2002-39527 A

  However, since the mechanism of the liquid fuel combustion device disclosed in Patent Document 1 is complicated, its manufacturing cost is very high.

  In addition, it is not preferable to attach a liquid fuel combustion apparatus having such a complicated mechanism to a relatively small oil fan heater or the like used in a general household.

  Therefore, if water accumulates in the fuel tank used for small oil fan heaters, etc., the lid of the fuel filler port must be removed and the tank turned upside down to drain water from the fuel filler port. It was very troublesome.

  At this time, it is difficult to discharge only water from the inside of the fuel tank, and water must be discharged together with a certain amount of kerosene, so that some fuel is wasted.

  In addition, when kerosene was discharged, it could ignite and was extremely dangerous.

  Therefore, the present invention has been created in view of the existing circumstances as described above, and anyone can easily and safely drain water accumulated in the fuel tank. The purpose is to provide.

  The water draining device in the fuel tank according to the present invention solves the above-mentioned problems by attaching a core member for water absorption to a casing body containing a water absorbing agent.

  Moreover, the problem mentioned above was solved by attaching the core member for water absorption to the casing body which accommodates the water absorbing agent and the desiccant.

  Further, the core member has the upper end portion disposed in the water absorbent or desiccant of the casing body, and the lower end portion is disposed in the vicinity of the inner bottom portion of the fuel tank.

  Moreover, the core member was attached to the lower end side of the casing body, thereby solving the above-described problem.

  In addition, the core member is attached to the casing body via a screw-in fixing member, thereby solving the above-described problem.

  Moreover, the screwed fixing member has a cylindrical portion that holds the core member on the upper side thereof, thereby solving the above-described problem.

  In addition, the above-mentioned problem was solved by providing a plurality of water passage holes on the peripheral wall of the cylindrical portion holding the core member.

  Further, the casing body is disposed in the fuel in the fuel tank, thereby solving the above-described problem.

  Further, the casing body is attached to the fuel filler port of the fuel tank, thereby solving the above-described problem.

  Moreover, the casing body arrange | positioned in the fuel in a fuel tank is equipped with the floating member in the upper end part side, and is equipped with the weight in the screwed fixing member screwed in the lower end part side of the casing body. In this way, the above-mentioned problem has been solved.

  In addition, the casing body arranged in the fuel in the fuel tank is provided with a pressure leveling adjustment unit on the side surface to reduce the differential pressure between the internal pressure of the casing body and the internal pressure of the fuel tank. The problem mentioned above was also solved.

  Moreover, the pressure equalization adjustment part solved the problem mentioned above similarly by being formed with the recessed part provided with the several slit hole, and the flexible film | membrane which covers this recessed part.

  Since the water draining device in the fuel tank according to the present invention has a water absorbing core member attached to the casing body containing the water absorbing agent, the structure is simple, and a product for draining water in the fuel tank is provided. It can be manufactured at low cost.

  Moreover, since the water absorbing agent is accommodated in the casing body, the water absorbed by the core member can be adsorbed by the water absorbing agent.

  Furthermore, when the water absorbing agent and the desiccant are accommodated in the casing body, the water absorbed by the core member can be adsorbed by the water absorbing agent and the desiccant.

  The core member has an upper end side disposed in the water absorbent or desiccant of the casing body and a lower end side disposed near the inner bottom of the fuel tank. Absorbed by the core member, the water in the fuel tank can be reliably removed. That is, the water in the fuel tank is sucked using the capillary phenomenon in the core member.

  And since the water absorbed by the core member is adsorbed by the water-absorbing agent or the desiccant, continuous water absorption by the core member is possible.

  Moreover, since the core member is attached to the lower end portion side of the casing body, it is possible to suck water from below the casing body and move the water upward.

  In addition, since the core member is attached to the casing body via the screw fixing member, the core member can be easily attached and detached.

  In addition, since the screw-in fixing member includes the cylindrical portion that holds the core member on the upper side, the core member can be maintained in an upright state inside the casing body.

In addition, since a plurality of water passage holes are provided in the peripheral wall of the cylindrical portion that holds the core member, the water absorbed by the core member can be allowed to pass therethrough and be adsorbed by the water absorbing agent or the desiccant.
At this time, since the core member is not in contact with the water-absorbing agent or the desiccant, it is possible to prevent the core member from being deteriorated or altered.

  Further, since the casing body is disposed in the fuel in the fuel tank, it is not necessary to provide an extra space outside the fuel tank.

  On the other hand, if water has accumulated in the fuel tank used for small oil fan heaters, etc., remove the fuel filler lid and attach the casing body to the fuel tank fuel filler. The accumulated water can be removed.

  At this time, it is not necessary to turn the fuel tank upside down. Further, only water can be discharged from the fuel tank, and part of the fuel is not wasted. Furthermore, since only water is discharged, there is no danger of ignition and it is safe.

  Moreover, the casing body arrange | positioned in the fuel in a fuel tank is equipped with the floating member in the upper end part side, and is equipped with the weight in the screwed fixing member screwed in the lower end part side of the casing body. For this reason, in the fuel in the fuel tank, the casing body can always be maintained upright and the core member can continuously absorb water.

  In addition, since the casing body arranged in the fuel in the fuel tank is provided with a pressure leveling adjustment unit that reduces the differential pressure between the internal pressure of the casing body and the internal pressure of the fuel tank on its side surface, It is possible to prevent the occurrence of a situation where the water absorption capability due to the capillary phenomenon of the core member is reduced due to the differential pressure.

  In addition, the pressure leveling adjustment section is formed by a recess having a plurality of slit holes and a flexible film covering the recess, so that the internal pressure of the casing body is a negative pressure lower than the internal pressure of the fuel tank. When the pressure state is reached, the flexible membrane is crushed toward the concave portion and the air existing between the membrane and the concave portion enters the inside of the casing body through the slit hole, and the internal pressure of the casing body is reduced to the fuel. It becomes possible to make the pressure almost the same as the internal pressure of the tank.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  The drain device 1 in the fuel tank according to the present invention is used, for example, to drain water R accumulated in kerosene Q, which is fuel in a fuel tank P for refueling such as an oil fan heater. .

  As shown in FIGS. 1 to 4, the drainage device 1 is disposed in kerosene Q, which is the fuel in the fuel tank P, and as shown in FIGS. Some are attached to the mouth S.

  As shown in FIGS. 1 to 3, the drainage device 1 disposed in the kerosene Q that is the fuel in the fuel tank P has a casing body 2 formed in a cylindrical shape with a predetermined length for absorbing water. The core member 5 is attached.

  The casing body 2 contains a predetermined water-absorbing agent 3 and a desiccant 30 such as silica gel.

  The casing body 2 may contain only the water absorbing agent 3. The water absorbing agent 3 may be anything as long as it has water absorbency. Further, only the desiccant 30 may be accommodated in the casing body 2. The desiccant 30 is not limited to silica gel or the like and may be any type. Further, the water absorbent 3 and the desiccant 30 may be mixed and accommodated in the casing body 2.

  The casing body 2 shown in FIGS. 1 to 3 is formed in a cylindrical shape, but is not limited to this, and may have any shape, for example, a rectangular cylindrical shape. .

  As the core member 5 for water absorption, for example, a cotton core material used for an alcohol lamp is used.

  As shown in FIGS. 2 and 3, the water-absorbing core member 5 is attached to the lower end portion side of the casing body 2 via a screw-in fixing member 4.

  As shown in FIG. 1, the screw-in fixing member 4 is formed in a cylindrical shape as a whole and holds the core member 5. At this time, the upper and lower ends of the core member 5 are in a state of projecting from the screw-in fixing member 4 by a predetermined length.

  The screw fixing member 4 that holds the core member 5 includes a flange portion 7 below. A male screw portion 8 having a predetermined length is provided above the flange portion 7. Further, a cylindrical portion 11 formed relatively long is provided above the male screw portion 8. A plurality of water passage holes 10 are provided on the peripheral wall of the cylindrical portion 11. A ring-shaped weight 9 is attached to the male screw portion 8 so as to be in contact with the upper end portion of the flange portion 7.

  On the other hand, a female thread portion 6 is provided at the lower end portion of the casing body 2 as shown in FIGS. Then, the male screw portion 8 of the screw fixing member 4 is screwed into the female screw portion 6 of the casing body 2 to fix the screw fixing member 4 to the casing body 2.

  At this time, as shown in FIG. 3, the core member 5 is disposed in the water absorbent 3 or the desiccant 30 of the casing body 2 on the upper end side through the cylindrical portion 11.

  Further, the screw fixing member 4 can appropriately change the length of the core member 5 hanging from the lower surface of the casing body 2 by appropriately adjusting the screwing length of the casing body 2 into the female thread portion 6. I am doing so.

  Further, as shown in FIGS. 1 to 3, the casing body 2 includes a floating member 12 formed in a hollow spherical shape on the upper end side. The floating member 12 is attached to the casing body 2 via a cap body 13. As shown in FIGS. 1 and 3, the cap body 13 includes a predetermined male thread portion 27, and the male thread portion 27 of the cap body 13 is connected to the female thread portion 28 provided on the inner peripheral surface of the upper end portion of the casing body 2. Are fixed to the upper end portion of the casing body 2. The floating member 12 is fixed to the cap body 13 via a predetermined string member or the like.

  The casing body 2 including the screw-in fixing member 4 and the cap body 13 is maintained in a sealed state except for the water R that enters through the core member 5.

  Further, when the casing body 2 is disposed in kerosene Q, which is the fuel in the fuel tank P, the casing body 2 depends on the balance between the load of the weight 9 and the buoyancy of the floating member 12, as shown in FIG. 2 is kept standing in kerosene Q at all times.

  At this time, as shown in FIG. 3, the inner end of the fuel tank P is positioned so that the tip end portion of the core member 5 hanging from the lower surface of the casing body 2 is located in the water R accumulated in the fuel tank P. It arrange | positions so that a bottom part may be contacted. That is, the buoyancy of the floating member 12, the screwing length of the screwing fixing member 4 to the casing body 2, the length of the core member 5 protruding downward from the screwing fixing member 4, and the like are appropriately adjusted. It creates such a state.

  If the tip of the core member 5 is located in the water R collected in the fuel tank P, the core member 5 may not be in contact with the inner bottom of the fuel tank P.

  Further, as shown in FIG. 4, an internal pressure leveling adjustment unit 15 that reduces the differential pressure between the internal pressure of the casing body 2 and the internal pressure of the fuel tank P is provided on the side surface of the casing body 2. The internal pressure leveling adjustment unit 15 is formed by a recess 16 having a plurality of slit holes 17 and a flexible film 14 covering the recess 16.

  That is, as shown in FIGS. 1 and 2, a plurality of slit holes 17 provided in the vertical direction are arranged adjacent to each other on the peripheral side surface on the lower end side of the casing body 2. As shown in FIG. 3, the slit hole 17 communicates the outer peripheral surface and the inner peripheral surface of the recess 16 in the casing body 2.

  Further, the entire surface of the recess 16 is covered with a flexible film 14 having flexibility such as rubber, for example, in a slightly bulging state. At this time, a predetermined amount of air exists on the outer peripheral surface of the concave portion 16 and the inner side of the flexible film 14.

  When the internal pressure of the casing body 2 becomes a negative pressure lower than the internal pressure of the fuel tank P, the flexible film 14 is crushed so as to contact the recess 16 as shown in FIG. The air existing between the flexible membrane 14 and the recess 16 is sent into the casing body 2 through the slit hole 17. In this way, the internal pressure of the casing body 2 is set to be approximately the same as the internal pressure of the fuel tank P.

  The internal pressure leveling adjustment unit 15 may be provided at a plurality of locations on the peripheral surface of the casing body 2. Moreover, you may provide in the surrounding surface in the whole casing body 2. FIG.

  Hereinafter, an example of use / assembly / operation of the water draining device 1 in the fuel tank configured as described above will be described.

  First, as shown in FIG. 1, one end of the core member 5 is inserted into the cylindrical portion 11 of the screw fixing member 4, and the upper and lower ends of the core member 5 are screwed fixing member 4 by a predetermined length. Protruding from the state.

  Further, as shown in FIG. 2, a weight 9 is attached to the male screw portion 8 so as to contact the upper end portion of the flange portion 7, and the male screw portion 8 of the screwed fixing member 4 is attached to the female screw portion 6 of the casing body 2. The screw fixing member 4 is fixed to the casing body 2 by screwing.

  Then, the water absorbing agent 3 and the desiccant 30 are placed in the casing body 2. At this time, as shown in FIG. 3, the core member 5 is disposed in the water absorbent 3 or the desiccant 30 of the casing body 2 on the upper end side through the cylindrical portion 11.

  In that state, the male screw portion 27 of the cap body 13 is screwed into the female screw portion 28 provided on the inner peripheral surface of the upper end portion of the casing body 2, and the cap body 13 connecting the floating member 12 is connected to the casing body 2. Secure to the top of the.

  When the casing body 2 assembled in this way is put into the kerosene Q of the fuel tank P, the casing body 2 is caused by the balance between the load of the weight 9 and the buoyancy of the floating member 12 as shown in FIG. It becomes a standing state in kerosene Q. Further, the tip end portion of the core member 5 hanging from the lower surface of the casing body 2 is disposed so as to be located in the water R collected in the fuel tank P as shown in FIG.

  In this state, utilizing the capillary phenomenon in the core member 5, the water R in the fuel tank P is sucked and the water R is moved to above the cylinder portion 11 disposed in the casing body 2. In this process, the water R sucked by the core member 5 is poured into the casing body 2 from the water hole 10, and the water R is adsorbed to the water absorbent 3 and the desiccant 30 accommodated in the casing body 2.

  Further, when the internal pressure of the casing body 2 becomes a negative pressure lower than the internal pressure of the fuel tank P, the flexible membrane 14 is crushed so as to contact the recess 16 as shown in FIG. The air existing between the flexible membrane 14 and the recess 16 is sent into the casing body 2 through the slit hole 17.

  Therefore, the internal pressure of the casing body 2 is substantially the same as the internal pressure of the fuel tank P.

  Next, the drainage device 1 attached to the fuel filler port S of the fuel tank P will be described.

  In addition, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol to the part substantially the same as the structure of the drainage apparatus 1 arrange | positioned in the above-mentioned kerosene Q.

  As shown in FIGS. 5 and 6, the water draining device 1 is configured by attaching a water absorbing core member 5 to a casing body 2 formed in a rectangular box shape.

  The casing body 2 contains a predetermined water-absorbing agent 3 and a desiccant 30 such as silica gel.

  Note that the casing body 2 may have any shape.

  As for the casing body 2, the screw cylinder part 21 is integrally extended toward the downward direction from the center of the bottom part. In addition, a bolt-shaped lid member 22 is attached to the screw cylinder portion 21 in order to close the fuel filler port S of the fuel tank P. Specifically, the female screw portion 23 of the lid member 22 is screwed into the male screw portion provided in the screw cylinder portion 21, and the bolt-shaped lid member 22 is attached to the screw cylinder portion 21.

  Further, as shown in FIGS. 6 and 7, a plug member 26 that matches the fuel filler opening S of the fuel tank P is provided on the lower surface of the lid member 22.

  Further, as shown in FIG. 6, a female screw portion is provided on the inner periphery of the screw cylinder portion 21.

  The casing body 2 includes a lid body 25 that closes the upper opening.

  On the other hand, the core member 5 for water absorption is attached to the bottom of the casing body 2 via a screwed fixing member 4 as shown in FIG.

  As shown in FIG. 5, the screw-in fixing member 4 is entirely formed in a cylindrical shape having a predetermined length, and a male screw portion 8 is provided on the entire outer peripheral surface. The screw-in fixing member 4 holds the core member 5.

  At this time, the upper and lower ends of the core member 5 are in a state of projecting from the screw-in fixing member 4 by a predetermined length.

  In addition, the length which makes the core member 5 protrude is located in the water R which the lower end side is collected in the fuel tank P, and the upper end side is in the water absorbing agent 3 and desiccant 30 which are accommodated in the casing body 2. Any length can be used as long as it is located in.

  However, the core member 5 protruding from the upper end side of the screw-in fixing member 4 has a longer length as shown in FIG. 6 in order to easily absorb the absorbed water R to the water absorbent 3 or the desiccant 30. This is preferable.

  The screwed fixing member 4 includes a flange portion 7 below.

  Note that when the casing body 2 is formed to be relatively elongated, a cylindrical portion having a predetermined length provided with a plurality of water passage holes may be attached to the upper end portion of the screw-in fixing member 4.

  Then, as shown in FIG. 6, the screw fixing member 4 holding the core member 5 is attached to the screw cylinder portion 21 of the casing body 2.

  Specifically, the male screw portion 8 of the screw fixing member 4 is screwed into the female screw portion provided on the inner periphery of the screw cylinder portion 21 to fix the screw fixing member 4 to the casing body 2. .

  Hereinafter, an example of use / assembly / operation of the water draining device 1 in the fuel tank configured as described above will be described.

First, as shown in FIG. 6, the screw fixing member 4 holding the core member 5 is fixed to the screw cylinder portion 21 of the casing body 2, and the water absorbing agent 3 and the desiccant 30 in the casing body 2. Insert. At this time, the core member 5 is arranged longer as shown in FIG. 6 in order to make the absorbed water R easy to adsorb to the water absorbent 3 and the desiccant 30.

  In this state, the lid body 25 is attached to the upper opening of the casing body 2.

  In this way, the casing body 2 to which the screwed fixing member 4 is fixed is attached to the fuel filler opening S of the fuel tank P as shown in FIG. Specifically, the plug member 26 of the lid member 22 is fitted into the fuel filler port S of the fuel tank P.

  In addition, when a predetermined packing or the like is interposed between the lid member 22 and the fuel filler S, the leakage of kerosene Q from the fuel filler S can be reliably prevented. Further, it is possible to prevent a situation in which the casing body 2 attached to the fuel filler opening S of the fuel tank P is unexpectedly detached.

  Furthermore, the tip portion of the core member 5 depending from the lower surface of the casing body 2 is disposed so as to be located in the water R accumulated in the fuel tank P as shown in FIG.

  In this state, utilizing the capillary phenomenon in the core member 5, the water R in the fuel tank P is sucked and the water R is adsorbed by the water absorbent 3 and the desiccant 30 accommodated in the casing body 2.

  The fuel tank draining device according to the present invention can be widely used for discharging water accumulated in a fuel tank having various forms in addition to a fuel tank for refueling such as an oil fan heater. .

It is a disassembled perspective view which shows the structure of the drainage apparatus arrange | positioned in the fuel in a fuel tank. It is a perspective view which shows the structure of the drainage apparatus arrange | positioned in the fuel in a fuel tank. It is sectional drawing which shows the use condition of the drainage apparatus arrange | positioned in the fuel in a fuel tank. It is an expanded sectional view which shows the structure of the pressure equalization adjustment part in the drainage apparatus arrange | positioned in the fuel in a fuel tank. It is a disassembled perspective view which shows the structure of the drainage apparatus with which the fuel filler of a fuel tank is mounted | worn. It is a disassembled sectional view which shows the structure of the drainage apparatus with which the fuel filler of a fuel tank is mounted | worn. It is a perspective view which shows the use condition of the water draining apparatus with which the fuel filler of a fuel tank is mounted | worn.

Explanation of symbols

P ... Fuel tank Q ... Kerosene R ... Water S ... Refueling port 1 ... Drainage device 2 ... Casing body 3 ... Water absorbent 4 ... Screw-in fixing member 5 ... Core member 6 ... Female screw part 7 ... Flange part 8 ... Male screw part DESCRIPTION OF SYMBOLS 9 ... Weight 10 ... Water flow hole 11 ... Cylindrical part 12 ... Floating member 13 ... Cap body 14 ... Membrane 15 ... Internal pressure equalization adjustment part 16 ... Recessed part 17 ... Slit hole 21 ... Screw cylinder part 22 ... Covering body 23 ... Female screw part 25 ... Cap body 26 ... Packing 27 ... Male screw part 28 ... Female screw part 30 ... Desiccant

Claims (12)

  A water draining device in a fuel tank, wherein a water absorbing core member is attached to a casing body containing a water absorbing agent.   A water draining device in a fuel tank, wherein a water absorbing core member is attached to a casing body containing a water absorbing agent and a desiccant.   The drainage device in the fuel tank according to claim 1 or 2, wherein the core member has an upper end portion disposed in a water absorbent or a desiccant of the casing body, and a lower end portion disposed in the vicinity of the inner bottom portion of the fuel tank.   The drainage device in the fuel tank according to any one of claims 1 to 3, wherein the core member is attached to a lower end portion side of the casing body.   The drainage device in the fuel tank according to any one of claims 1 to 4, wherein the core member is attached to the casing body via a screwed fixing member.   The drainage device in the fuel tank according to claim 5, wherein the screw-in fixing member includes a cylinder portion that holds the core member on an upper side thereof.   The drainage device in the fuel tank according to claim 6, wherein a plurality of water passage holes are provided in a peripheral wall of the cylindrical portion that holds the core member.   The drainage device in a fuel tank according to any one of claims 1 to 7, wherein the casing body is disposed in the fuel in the fuel tank.   The drainage device in the fuel tank according to any one of claims 1 to 7, wherein the casing body is attached to a fuel filler port of the fuel tank.   The casing body arranged in the fuel in the fuel tank includes a floating member on an upper end portion side thereof, and a weight on a screwed fixing member screwed on a lower end portion side of the casing body. The drain device in the fuel tank according to claim 8.   The casing body arranged in the fuel in the fuel tank is provided with a pressure leveling adjusting portion for reducing a differential pressure between the internal pressure of the casing body and the internal pressure of the fuel tank on a side surface thereof. The water draining device in the fuel tank as described.   The water draining device in the fuel tank according to claim 11, wherein the pressure leveling adjustment unit is formed by a recess having a plurality of slit holes and a flexible film covering the recess.

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